Definition of: ocher

(ō′kər) noun
1. A native earth varying from light yellow to deep orange or brown, and consisting of iron trioxide and water with varying proportions of clay in impalpable subdivision, largely used as a pigment.
2. Any metallic oxide occurring in an earthy or finely divided form.
3. A dark-yellow color derived from or compared to ocher.
—red ocher A red, ferruginous native ocher: also called Indian red, Venetian red. Also o′chre. [<OF ocre <L ochra <Gk. ōchra yellow ocher <ōchros pale yellow]
—o′cher·ous, o·chre·ous (ō′krē·əs), o′cher·y, o′chry adjective